diff options
Diffstat (limited to 'target/linux/generic/backport-6.1/301-v6.9-kernel.h-removed-REPEAT_BYTE-from-kernel.h.patch')
| -rw-r--r-- | target/linux/generic/backport-6.1/301-v6.9-kernel.h-removed-REPEAT_BYTE-from-kernel.h.patch | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/target/linux/generic/backport-6.1/301-v6.9-kernel.h-removed-REPEAT_BYTE-from-kernel.h.patch b/target/linux/generic/backport-6.1/301-v6.9-kernel.h-removed-REPEAT_BYTE-from-kernel.h.patch new file mode 100644 index 0000000000..239adff1af --- /dev/null +++ b/target/linux/generic/backport-6.1/301-v6.9-kernel.h-removed-REPEAT_BYTE-from-kernel.h.patch @@ -0,0 +1,161 @@ +From 66a5c40f60f5d88ad8d47ba6a4ba05892853fa1f Mon Sep 17 00:00:00 2001 +From: Tanzir Hasan <tanzirh@google.com> +Date: Tue, 26 Dec 2023 18:00:00 +0000 +Subject: [PATCH] kernel.h: removed REPEAT_BYTE from kernel.h + +This patch creates wordpart.h and includes it in asm/word-at-a-time.h +for all architectures. WORD_AT_A_TIME_CONSTANTS depends on kernel.h +because of REPEAT_BYTE. Moving this to another header and including it +where necessary allows us to not include the bloated kernel.h. Making +this implicit dependency on REPEAT_BYTE explicit allows for later +improvements in the lib/string.c inclusion list. + +Suggested-by: Al Viro <viro@zeniv.linux.org.uk> +Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com> +Signed-off-by: Tanzir Hasan <tanzirh@google.com> +Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> +Link: https://lore.kernel.org/r/20231226-libstringheader-v6-1-80aa08c7652c@google.com +Signed-off-by: Kees Cook <keescook@chromium.org> +--- + arch/arm/include/asm/word-at-a-time.h | 3 ++- + arch/arm64/include/asm/word-at-a-time.h | 3 ++- + arch/powerpc/include/asm/word-at-a-time.h | 4 ++-- + arch/riscv/include/asm/word-at-a-time.h | 3 ++- + arch/s390/include/asm/word-at-a-time.h | 3 ++- + arch/sh/include/asm/word-at-a-time.h | 2 ++ + arch/x86/include/asm/word-at-a-time.h | 3 ++- + arch/x86/kvm/mmu/mmu.c | 1 + + fs/namei.c | 2 +- + include/asm-generic/word-at-a-time.h | 3 ++- + include/linux/kernel.h | 8 -------- + include/linux/wordpart.h | 13 +++++++++++++ + 12 files changed, 31 insertions(+), 17 deletions(-) + create mode 100644 include/linux/wordpart.h + +--- a/arch/arm/include/asm/word-at-a-time.h ++++ b/arch/arm/include/asm/word-at-a-time.h +@@ -8,7 +8,8 @@ + * Little-endian word-at-a-time zero byte handling. + * Heavily based on the x86 algorithm. + */ +-#include <linux/kernel.h> ++#include <linux/bitops.h> ++#include <linux/wordpart.h> + + struct word_at_a_time { + const unsigned long one_bits, high_bits; +--- a/arch/arm64/include/asm/word-at-a-time.h ++++ b/arch/arm64/include/asm/word-at-a-time.h +@@ -9,7 +9,8 @@ + + #ifndef __AARCH64EB__ + +-#include <linux/kernel.h> ++#include <linux/bitops.h> ++#include <linux/wordpart.h> + + struct word_at_a_time { + const unsigned long one_bits, high_bits; +--- a/arch/powerpc/include/asm/word-at-a-time.h ++++ b/arch/powerpc/include/asm/word-at-a-time.h +@@ -4,8 +4,8 @@ + /* + * Word-at-a-time interfaces for PowerPC. + */ +- +-#include <linux/kernel.h> ++#include <linux/bitops.h> ++#include <linux/wordpart.h> + #include <asm/asm-compat.h> + #include <asm/extable.h> + +--- a/arch/sh/include/asm/word-at-a-time.h ++++ b/arch/sh/include/asm/word-at-a-time.h +@@ -5,6 +5,8 @@ + #ifdef CONFIG_CPU_BIG_ENDIAN + # include <asm-generic/word-at-a-time.h> + #else ++#include <linux/bitops.h> ++#include <linux/wordpart.h> + /* + * Little-endian version cribbed from x86. + */ +--- a/arch/x86/include/asm/word-at-a-time.h ++++ b/arch/x86/include/asm/word-at-a-time.h +@@ -2,7 +2,8 @@ + #ifndef _ASM_WORD_AT_A_TIME_H + #define _ASM_WORD_AT_A_TIME_H + +-#include <linux/kernel.h> ++#include <linux/bitops.h> ++#include <linux/wordpart.h> + + /* + * This is largely generic for little-endian machines, but the +--- a/arch/x86/kvm/mmu/mmu.c ++++ b/arch/x86/kvm/mmu/mmu.c +@@ -44,6 +44,7 @@ + #include <linux/kern_levels.h> + #include <linux/kstrtox.h> + #include <linux/kthread.h> ++#include <linux/wordpart.h> + + #include <asm/page.h> + #include <asm/memtype.h> +--- a/fs/namei.c ++++ b/fs/namei.c +@@ -17,8 +17,8 @@ + + #include <linux/init.h> + #include <linux/export.h> +-#include <linux/kernel.h> + #include <linux/slab.h> ++#include <linux/wordpart.h> + #include <linux/fs.h> + #include <linux/namei.h> + #include <linux/pagemap.h> +--- a/include/asm-generic/word-at-a-time.h ++++ b/include/asm-generic/word-at-a-time.h +@@ -2,7 +2,8 @@ + #ifndef _ASM_WORD_AT_A_TIME_H + #define _ASM_WORD_AT_A_TIME_H + +-#include <linux/kernel.h> ++#include <linux/bitops.h> ++#include <linux/wordpart.h> + #include <asm/byteorder.h> + + #ifdef __BIG_ENDIAN +--- a/include/linux/kernel.h ++++ b/include/linux/kernel.h +@@ -36,14 +36,6 @@ + + #define STACK_MAGIC 0xdeadbeef + +-/** +- * REPEAT_BYTE - repeat the value @x multiple times as an unsigned long value +- * @x: value to repeat +- * +- * NOTE: @x is not checked for > 0xff; larger values produce odd results. +- */ +-#define REPEAT_BYTE(x) ((~0ul / 0xff) * (x)) +- + /* generic data direction definitions */ + #define READ 0 + #define WRITE 1 +--- /dev/null ++++ b/include/linux/wordpart.h +@@ -0,0 +1,13 @@ ++/* SPDX-License-Identifier: GPL-2.0 */ ++ ++#ifndef _LINUX_WORDPART_H ++#define _LINUX_WORDPART_H ++/** ++ * REPEAT_BYTE - repeat the value @x multiple times as an unsigned long value ++ * @x: value to repeat ++ * ++ * NOTE: @x is not checked for > 0xff; larger values produce odd results. ++ */ ++#define REPEAT_BYTE(x) ((~0ul / 0xff) * (x)) ++ ++#endif // _LINUX_WORDPART_H |